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Preparation and characterization of perlite‐filled high‐density polyethylenes. I. Mechanical properties
Author(s) -
Akinöktem Gülsu,
Tincer Teoman
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070540813
Subject(s) - perlite , materials science , ultimate tensile strength , composite material , high density polyethylene , polyethylene , silane , scanning electron microscope , young's modulus , low density polyethylene , polymer
Four different types of high‐density polyethylenes (HDPE) were blended with perlite at different concentrations. Silane coupling agent γ‐aminopropyltriethoxv silane (γ‐APS, A‐1100) was used to enhance the adhesion between perlite and HDPEs. Ultimate tensile strength and elastic modulus increased as the perlite content increased, while ultimate elongations decreased with the increasing amount of perlite. Exceptional variations in the measured properties are explained in terms of the differences in polyethylenes used in the composites. The biggest improvement in ultimate tensile strength was observed in the highly crystalline polyethylene; on the other hand, in the absence of sialane coupling agent the high molecular weight polyethylene showed the least improvement in tensile strength. The effect of branching in HDPE composites was demonstrated. The enhancement of interfacial adhesion by using a coupling agent was also examined by scanning electron microscopy (SEM). © 1994 John Wiley & Sons, Inc.